Motorola MSAT-G2 Installation Manual page 22

Bushings, Part No. SPAC-M00227 are used to ensure NO electrical contact between the
mechanical parts of the antenna (in the dome) and the mounting pole. This isolation is not
required in vehicle installations but is required in maritime installations, where the antenna
and co-axial cable to the antenna must be isolated from ships structure in order to avoid any
circulating DC current that could cause uncontrolled corrosion.
Washers, Part No. SPAC-M90-10062 are used to protect the plastic bushings SPAC-M00227
when the screws SPAC-M90-10102 are tightened to the specified torque. The washers
MUST be used.
Screws, Part No. SPAC-M90-10102 are M6 (metric), 25mm long screws made from stainless
steel (A4) are used for fastening the antenna to the flange on the mounting pole so that the
installation will endure vibrations and heavy loads due to wind or surges from rough sea.
DO NOT CHANGE THE LENGTH OF THE SCREWS.
Clamps, Part No. SPAC-M00428 are used to fasten the flanges SPAC-M00430 to the
mounting pole, refer to FIG.21.
Clamps, Part No. SPAC-M00429 are used to fasten the mounting pole to any post with a
diameter between 35 and 50 mm, refer to FIG.21.
Nuts, Part No. SPAC-M90-10105 are M8 nuts used for the clamps, refer to FIG.21 Nuts are
to be tightened to 5Nm.
Flange, Part No. SPAC-M00430 are used for linking the clamp holding forces.
Plug, Part No. SPAC-M00233 is used for partly closing the bottom of the Mounting Pole so
that no surge of water will fill the tube or damage any part of the antenna. Any condensing
water within the antenna and/or tube will drop out by the plug. The plug will also prevent
the coaxial cable from vibrating in the tube.
Screw, M5*10, Part No. SPAC-M90-10104 is used to secure the plug.
The kit offers the following advantages:
• Flexible and easy installation.
• Provides ventilation of the antenna while ensuring compliance with its relevant IP class.
• Protects the co-axial cable going to the antenna and its N-type connector.
• Isolates the antenna from the structure on which it is installed, this is a must in
maritime installations where no DC current is allowed to flow through any part
of the ship.
MSAT-G2 Installation Guide 20